L'information sociale et économique par la méthode des sondages
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| Reference code: | MAD/030.31 |
|---|---|
| By: | |
| Type: | monografie |
| Language: | Frans |
| Published: |
Bruxelles: Parc Léopold
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| Date: | 1946 |
| Series: | INSOC, Vol. (1946)01 |
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